Pulley.



1.1. DILLON.

PULLEY.

APPLICATION FILED DEC-211N16- mmsz Patented May 1, 1917.

JOSEPH J. DILLON, OF WILMETTE, ILLINOIS.

roman.

Specification of Letters Patent.

Patented May 1, 1917'.

Application filed Decemberfll, 1916. Serial No. 138,213.

To all whom it may concern."

Be it known that I, JOSEPH J. DILLoN, a citizen of the United States,residing at \Vilmette, in the county of Cook and State of Illinois, haveinvented new and useful Improvements'in Pulleys, of which the followingis a specification.

This invention relates to pulleys for sash cords, and its object is toprovide a novel and improved support and casing for said pulley soconstructed and arranged that it guides the cord to prevent the samefrom slipping off the pulley.

The invention also has for its'object 'to provide a pulley casing whichaffords complete protection to the pulley and that portion of the cordwhich runs over the pulley,

and also to provide a casing which is in sections to enable the pulleyto be readily inserted in .place therein, together with a novel andimproved means for holding thecasing sections assembled in a mannerprecluding all danger of the sections getting out of alinement.

The objects stated are attained by means of a combination andarrangementof parts to be hereinafter described and claimed, and inorder that the same maybe better understood, reference is had to theaccompanying drawing forming a part of this tion.

In the drawing,

Figure 1 is a vertical section showing the application of the invention,and r Fig. 2 is a perspective View of the pulley casing.

Referring specifically to the drawing, ,5 denotes a grooved pulley overwhich the sash cord 6 is trained, said cord being attached at one end tothe sash 7 and having connected at its other end the Weight 8. Thepulley is housed in a casing having spaced opposite side walls 9carrying the shaft 10 on which the pulley is journaled. The casing has acurved top 11 to conform to the curvature of the pulley periphery. Theside walls 9 are flat and they are connected at their ends by end walls12. The casing is closed at the bottom by a wall 13 provided withopenings through which the sash cord 6 passes, these openings beinglined with bushings 14. The bushings are metal tubes, which, when theyare inserted in the openings are of greater length than said openings sothat they project at both ends. The projecting ends of the tube are thenrolled specificaoutward to grip or clench opposite sides of the wall 13,and to leave the ends of the tube rounded and perfectly smooth, therebyreducing wear of the sash cord to a minimum.

In order to facilitate the insertion of the pulley 5 into the casing,the latter is divided transversely'into two sections, one of whichcarries the pulley shaft 10, the dividing line or joint between thesections being shown at 15. At'the dividing line, one of the sectionshas an outstanding flange 16 which projects from the sides and also fromthe top and the bottom thereof. The other section has a similar flangel7, and when the sections are assembled, the two flanges come togetherin face-to-face relation and by screws or other suitable fasteners 18passed through the top and bottom projecting'portions of the flanges,the two sections of the casing are fastened together. The flange 16 islarger than the flange 17 and has a recess 19 in its face in which thelatter flange seats. The upper and lower ends of the recess are taperedor V-shaped and the corresponding ends of the flange 17 arecorrespondingly shaped to fit snugly therein, whereby perpendicular andsidewise slippage of the two casing sections relative to each other iseffectually prevented, and they are securely held assembled. This isdesirable as one of the openings for the sash cord 6 isin one of thecasing sections and the other opening is in the other section. Theopenings are therefore kept in perfect alinement to properly guide thesash cord and prevent it from slipping off-the pulley 5.

The device is mounted in a recess 20 in the window frame 21 in such aposition that one end of the casing projects over into the groove 22 ofthe sash rail in which the sash cord end to which the sash 7 is attachedruns, the opening in the casing through which the sash cord passes beingin line with this groove. The other end of the casing projects over intothat part of the window frame in which the weight 8 travels. The casingis held in place by the screws 18 which are long enough to pass into thewindow frame also.

By the structure hereinbefore described the sash cord 6 is effectuallyprevented from jumping off the pulley 5 and it is held closely, yetsmoothly, to the pulley. No dust or-water can enter the pulley casingand the cord is therefore completely protected.

forming the third support.

The device also permits the use of a rope, cable, or chain instead ofthe common sash' cord. Referring to 'Fig. 1 of the drawing, it will beseen that the device is supported at three points, the top and thebottom of the recess forming two supports, and that portion of thewindow frame 21 against 'which the flange 16 abuts The first twosupports guard against sudden vertical thrusts of the sash, and thethird against lateral tug of the sash cord, and'other dislodgingtendencies.

I claim The combination of a sash cord pulley, and a guide for the sashcord, said guide comprising a casing inclosing the pulley and dividedtransversely and off its center into two sections, the meeting ends ofthe sections having outstanding abutting flanges, the flange of onesection having a recess in its face in which recess the flange of theother section seats, the ends of the recess be- I ing reduced in Widthand the ends of the last-mentioned flange being shaped to fit in saidreduced ends of the recess, and fastening means passing through theflanges of the casing sections, each of said sections comprising abottom, a top, side walls and an end wall, the larger section supportingthe pulley and its bottom having a guide opening for one end of the sashcord, and

the bottom of the smaller section being provided with a guide openingfor the other end of the sash cord.

In testimony whereof I affix my signature.

JOSEPH J. DILLON.

